﻿using System;
using System.IO;
using System.Linq;

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            string filepath = @"E:\324.txt";
            string word = "SKDJ878KSJD";
            Console.WriteLine(word.ToLower());
            Console.WriteLine(Path.IsPathRooted(filepath));
            FileInfo tmp = new FileInfo(filepath);
            Console.WriteLine(tmp.Extension);
        }
    }
}
